Static and dynamic analysis of straight bars with variable cross-section

In this paper the equations of static equilibrium, the governing differential equation of shear and flexural vibrations of straight bars with variable cross-section are written in the form of unified self-conjugate differential equations of the second-order. These can be reduced to Bessel's equations. Based on an experimental study, the Guangzhou Hotel Building (27 stories) is treated as a cantilever beam of non-uniform section in free vibration analysis. The computed value of the natural frequency obtained by use of the proposed method of this paper approaches the measured value. Copyright (C) 1996 Elsevier Science Ltd.